From 60081b35c68ba6a466dee08de581be06999c930a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 13 Feb 2020 12:20:59 +0100 Subject: ALSA: usb-audio: Parse source ID of UAC2 effect unit During parsing the input source, we currently cut off at the Effect Unit node without parsing further its source id. It's no big problem, so far, but it should be more consistent to parse it properly. This patch adds the recursive parsing in parse_term_effect_unit(). It doesn't add anything in the audio unit parser itself, and the effect unit itself is still skipped, though. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=206147 Link: https://lore.kernel.org/r/20200213112059.18745-3-tiwai@suse.de Signed-off-by: Takashi Iwai --- sound/usb/mixer.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'sound/usb/mixer.c') diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 81b2db0edd5f..56d0878e4999 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -901,6 +901,12 @@ static int parse_term_effect_unit(struct mixer_build *state, struct usb_audio_term *term, void *p1, int id) { + struct uac2_effect_unit_descriptor *d = p1; + int err; + + err = __check_input_term(state, d->bSourceID, term); + if (err < 0) + return err; term->type = UAC3_EFFECT_UNIT << 16; /* virtual type */ term->id = id; return 0; -- cgit v1.2.3